Typographical distributing machine



y 1941- H. T. SUNDSTRQM HAL 2 3 TYPOGRAPHICAL DISTRIBUTING MACHINE Filed July 3, 1940 4 Sheets-Sheet l //V VENTOR BY 4 WM T0 zwz s.

Jufiy i, 3941. H. T. SUNDSTROM ETAL TYPOGRAPHICAL DISTRIBUTING MACHINE Filed July 3, 1940 4 Sheets-Sheet 2 July I, 1941- H. T. SUNDSTROM E TAL 2,247,973

TYPOGRAPHICAL DISTRIBUTING MACHINE Filed July 5, 1940 4 Sheets-Sheet s y 1, 1941- H. T. suNDsTROM ETAL 2,247,973

TYPOGRAPHICAL DISTRIBUTING MRCH'INE 4 Sheets-Sheet 4 Filed July 5, 1940 Patented July 1, 1941 TYPO GRAPHICAL DISTRIBUTING MACHINE Herman T. Sundstrom and Clarence A. Stopplc, 7 Houston, Tex., assignors to Mergenthaler Linotype Company, a corporation of New York Application July 3, 1940, Serial No. 343,696

20 Claims.

This invention relates to distributing mechanisms for typographical composing machines, such as Linotype machines of the general organization represented in Letters Patent of the United States to O. Mergenthaler No. 436,532,;

wherein circulating matrices are released from a magazine in the order in which their characters are to appear in print and then assembled in line, the composed line transferred to the face of a slotted mold, the mold filled with molten metal to form a slug or type-bar against the matrices which produce the type characters thereon, and the matrices thereafter returned through a distributing mechanism to the magazine from which they started.

More particularly, the present improvements are directed to that class of machines of the shiftable multiple magazine variety, wherein the magazines are movable upwardly and downwardly in the machine frame to bring a selected magazine into operative relation to the assembling and distributing devices. There are several different commercial models which make up this class of machines and the present improvements have been developed particularly in connection with those models Which include as features the improvements disclosed in U. S. Letters Patent No. 2,125,681 to Richard R. Mead.

In those machines, the shifting of the magazines is effected by a crank handle located at the front of the machine and connected to a magazine elevating mechanism adapted to provide for a quick, easy and smooth shifting of the magazines in changing from one to another. The magazine elevating mechanism has been so designed that a single turn of the crank handle will effect a change from one magazine to the next, and moreover, the efiort involved in shifting the magazines has been lightened to such extent that a force of one pound applied to and moved through one rotation of the crank handle will lift a load of sixty pounds covering a two and one-half inch movement of the magazines. The magazines are removably mounted on separate base frames conjointly constituting a shift frame, and the selected magazine is located in operative position by means of gage bars arranged in pairs at opposite sides of the magazines. The gage bars are supported at their lower ends upon aligning pieces on the fixed machine frame in position to present surfaces adapted for engagement with the under sides of aligning lugs projecting laterally from the opposite sides of the magazine base frames at both ends thereof. In providing for the engagement of the gage bars with the aligning lugs, the former are arranged to slide forwardly and backwardly so as in one position to stand clear of the aligning lugs during shifting of the magazines and in the other position to stand beneath the aligning lugs on the base frame of the selected magazine.

\ While the foregoing magazine shifting arrangement constitutes a decided improvement in the art, the movement of the gage bars into and out of the path of the aligning lugs on the base frames of the magazines requires clearance for their free movement, and because of the floating character of the shift frame (as contrasted with the earlier forms wherein the magamne base frame was located and supported by banking blocks) and the ease with Which the magazines can be raised and lowered, the aligning lugs may not seat firmly on the supporting surfaces of the gage bars unless strict attention is paid to that seating operation. Moreover, the gage bars are usually locked against full movement to inoperative position unless all matrices have been distributed, thus avoiding shifting of the magazines at a time when injury to the matrices or other parts of the machine might occur, or the matrices might be distributed to the wrong magazine. The gage bars are capable of a partial movement, however, to actuate feelers for determining whether or not matrices are in the course of distribution, and during such movement of the gage bars the magazine may be unseated inadvertently. In either event, whenever the magazine is unseated, its upper receiving end is out of alignment with the channel entrance and matrices being distributed therethrough frequently lodge at this point, so that any attempt to shift the magazines at such time causes damage or delay, or both. Furthermore, continued distribution of matrices when this occurs results in the matrices piling up in the channel entrance, and much time is lost while the channel entrance is being cleared and the cause of the difiiculty discovered and remedied.

The present invention is directed to certain improvements in the distributing mechanism in or for a typographical machine of this character in conjunction with the magazine raising and lowering mechanism, the general idea being to provide safety devices to prevent the unlocking of the magazine shift frame except at the proper time and to interrupt temporarily the distribution of matrices at any time when the magazine in operative position isv unseated. More specifically, the movement of the gage bars to inopic l cd.

cating matrix lifting finger of the distributor boxwhich presents the matrices individually to the distributing screws is providedto act whenever the shift frame is moved and unseats the magazine then in operative position! The locking device comprises a yielding detent which -is adapted to engage the matrix lifting finger to hold it in' its upper position, the rocking of the the upper or lower magazine as the case may be. The present improvements are shown in the accompanying drawings as embodied in the mixing type of machine because they were developed in connection with a machine of that character, but it will be obvious from the description to follow that they may be incorporated in any multiple magazine machine if necessary or desired.

In the embodiment illustrated, the machine is equipped with four magazines, A A A and A carried in a shift frame A arranged to be raised and loweredto bring selected pairs of magazines into operative position between the assembler mechanism B at the front and the distributor mechanism Cat the rear,

Since the present machine contemplates mix- I ing matrices from the two magazines in operadetent being controlled by trigger means acting in response to a very slight movement of the shift frame to which it isconnected by a suitable train of connections. *When the shift frame is moved to bring the magazine to its proper seating position, the trigger means'is reset andthe locking de'tent positively moved out: of engagement with the matrix lifting finger to permit the latter to resume its normal operation. 7 r

' In the accompanying drawings, the invention has been shown merely :by way of example and in preferred form, but obviously many variations and modifications may be made therein and inits mode of application which will still becomprised within its'.spirit.--It is to be understood, therefore, that the invention is not limited to any specific form or embodiment, except insofar .assuch limitations are specified in the appended -claims.- a a,

Referring to the drawings: Fig.4 is a side elevation of the upper portion of a machineof the classdescribed-equipped withthelpresent improvements;

Fig. 2 isan enlarged view of the upper portion of the structure shown in Fig. '1, some-of the parts being omitted;

. Fig; 3 is a rear elevation of a part of .the upper portion of the machine in the region of: the line 3.. .3 of Fig. 2, looking in the direction of the arrows-shown with the central portion-omitted;

Fig. 4 is a fragmentary side elevation, partly broken away, showing. the magazine shift frame locking-device; a

Fig. 5 is a view similar to Fig, 4, showing the parts in a different position for comparison;

Fig. 6 is a side elevation, partly in section, of

the upper part .of the structure shown in Fig. 1,

,looking'from the opposite side of the machine;

- is a rear elevation,.p'artly.in section, of

the structure shown in Fig. 6.

.Iheimprovements disclosed in the Mead pat- .ent referred to are incorporatedin one type of commercial machineialong. with the improve- Nos. 2,155,588 and 2,155,589, bothinlthe names of Eranl; C,..Frolandcr and Harold'A. Burt. The

and'Burt inventions. deal with the somix n of matrices, that. is,'withdrawing matrices indiscriminately fromntwo. different Enolan -magazines located .one, above theother andcomposing them in the same line. ty e of machine, among other-things, requires the provision of: .two distributor. boxes and two sets of distributing iscrews for simultaneously distributing. the -m.atrices. to .theinrespective channels of .the particular magaz'ines; from 'whichthey were drawn,

ments set forthin United States Letters Patents tive position, there are provided two distributors C and C (see Figs. 1 and 2), the upper distribu-' tor being connected through a channel entrance D. with the lower magazine in operative position,

and the lower distributor through a shorter ichannel entrance D with the upper magazine in operative position. The matrices X, as usual,

are fed to a distributor box C associated with the upper-distributor .(Figs. .6 and 7), wherein they. are supported by their upper projecting ears rion rails c .as they traverse the box. The idletributor box C is of standard construction, being provided,- as usual, with a vertically reciprocating slide or finger c which'acts to raise the matrices, individu lly to a' higher level. Accordin to whether ithejmatrices are to be returned to the lower or upper magazine in operative position, they are distinguished by Well known font selecting mechanism (the details of which are fully set forth in the last mentioned Frolander and Burt patent) which allows those belonging in the upper magazine to pass'to the lower distributor C? and raises those belonging in the lower magazine to the upper distributor C s a a y stated, the magazines A A A and A? are removably mounted on separate base frames A conjoint-1y constituting a shift frame which is arranged to be moved upwardly and downwardly in the machine frame. The selected magazines are located in operative position by means of gage bars F arranged in pairs at opposite sides of the magazines and connected by rigid members F These g e bars F are supported at their lower ends, aligning pieces F (the rear aligning piece only being indicated) on the fixed machine frame and engage the aligning lugs F projecting laterally from the opposite sides of the magazine base frames A at bothends thereof, When the selected magazines are brought into operative position, the aligning lugs F of their base frames will be engaged by the gage bars F, which thus locate the magazines 1 in proper position With respect to the assembling .and distributing mechanisms.

the engagement of the gage bars with the align- In providing. for

ing lugs, the former are arranged to slide for- .wardlyand backwardl'y .on the fixed aligning pieces F 80 as in'one position to stand clearof the aligning lugs during'the shifting of the magazines and, in, the. other position, to engage the aligning lugs onthe base frames of the selected magazines,.the movement .ofthe gage bars being controlled through a pair of arms F rising from .a rock, shaft F andeng-aging at their upper ends behind pinsF extending inwardly fromth e connecting members F With this arrangement, 75

whenit is desired to change from one pair-of magazines to another, the rock shaft F isrotated in the appropriate direction-to drawthe gage bars F forwardly against the tensionof their actuating springs F" out of the path of the magazine aligning lugs F and then, after the magazines have been raised or lowered totherequired extent, the rock shaft is. rotated in'the opposite direction to permit .the springs F7 (which really effect such reverserotation of the shaft) to restore the gage bars to their original or active position in engagement with the aligning'lugs on the base frames of themagazines selected.

At this time it may be convenient. to explain that the rock shaft F is controlledby a selecting handle J located at the front of the machine within easy reach of the operatorwhile seated at the keyboard (see Fig. 1). When themagazines are to be shifted, the handleJ. isturned from its normal position to draw the lever G downwardly to rock the shaft F5 and consequently move the gage bars forward.

With regard to the magazine raising andlow: ering mechanism, suffice it to saythat the elevate ing mechanism is operated by a crank handle H also located at the front of thema chine within easy reach of theoperator, the turningof the crank H effecting a rotation of the shaft H which in turn operates suitable gearing containedwithin the housing H all as set forth in the Mead patent referred to heretofore. V v p When the selected pair of magazines are seated in operative position, one or more of the align- .Xlg lugs F (depending upon which pair of magazines are in operative position) bank against the surfaces f of the gage bars F which definethe lower walls of the recesses f therein, During a magazine changing operation, the magazines are raised slightly to unseat the aligning lugsF? so that the gage bars can be moved forwardly with ease to unlocking position clear of the aligning lugs, whereupon the magazines are free to be adjusted to bring the lugs F on the base frame of the newly selected magazines into alignment with the recess f The gage bars F are then allowed to be returned to their locking position and the magazines lowered the slight" distance necessary to seat the lugs F on the surfaces of the recesses in which they engagel 'It is only when the aligning lugs F on the magazine base frames are in such seated condition that the magazines are in proper operative position to cooperate with the magazine entrance channels D and D at their upper matrix receiving ends. When the aligning lugs F are unseated, the bottom walls a of the magazines stand slightly above the bottom walls d of the entrance channels D and D In such event, the matrices X descending through the entrancechannels D and D from the distributors C and C respectively,'strike the raised lower walls a of the magazines and frequently lodge at that point, either bridging the gap between the entrance channels and the magazines if stopped by their lower ears 3: or protruding from the magazine if stopped by their upper ears x. l

According to the present improvements, a feeler device M, having two blades m and -m ,'is arranged so that the blades move across the upper receiving ends of the magazines in operative position in the space between the upper ends of the magazines and the lower ends of the channel entrances D and D The feeler blades m and m are supported from below by two vertical links m fastened to opposite ends of the blades, the lower ends of the links m being pivotally secured to levers N and N mounted on a horizontal shaft 0 supported in. the machine frame. The feeler M is adapted to be actuated by the initial movement of the gage bars F, and thisis accomplished by connecting the short arm 12 of -a bell-crank P to the gage bar connecting member F by a link Q. The bell-crank P is pivotedon the shaft 0 and its long arm 12 is connected near its free end tothe lever N bya tension spring R which extends between a pin 11 on the bell-crank P and a ring n formed on alug n? which rises from the top edge of the lever N.

An adjusting screw N arranged in the machine frame and adapted to contact the top edge of the arm N, and an adjusting screw P at the end of the long arm p of the bell-crank P arranged to contact the lower edge of the arm N, are provided for locating the bell-crank P and lever N in proper working relation to one another An arm N of the lever N which extends forwardly on the opposite side of the shaft Q has one end of a link N pivoted thereto, the opposite end of the link being pivotally connected to a latch S located below the arm N One end of the latch. S is pivoted as at s to the machine frame and the link N is adapted to support the latch so that it lies substantially parallel with the link Q when in operative position, the free end of the latch S beyond the link N being bent sidewise to engage loosely in a notch or recess q formed in the top edge of the link Q,

With the foregoing arrangement, when the handle J is actuated to move the gage barsF forward to inoperative position, the initial movement of the member F through the link Q rocks the bell crank P in a clockwise direction (Fig. 2), the bent end of the latch S riding freely in the recess q of the link Q and being raised slightly but not enough to clear the rear edge q of the recess. This rocking of the bell-crank P rotates the lever N also in a clockwise direction and draws the feeler ablades m and m downwardly across the upper ends of the magazines sufiiciently to contact any matrices which may be lodged at that point. In the event that one of the feeler blades strikes a matrix and is resisted in its downward movement, the spring R yields to limit the pressure of the feeler blade on the matrices and allow the link Q and the bell-crank P to partake of a slight additional movement. However, since the continued movement of the bellcrank is "relative to the lever N, the latch S is not raised enough to clear the rear edge q of the recess q in the link Q (see Fig. 5) and engages therewith to prevent further movement of the link Q and, hence, the withdrawal of the gage bars F .to inoperative position. Thus, the latch S positively limits the movement of the gage bars F and consequently the rocking of the bell-crank P, thereby preventing the application of undue pressure on the feeler M which would result from excessive tensioning of the spring B. On the other hand, if there are no matrices present to be engaged by the feeler blades m and m the bellc-rank P and lever N continue to move in unison and the upward movement of the arm N lifts the latch S clear of the recess q (see Fig. 4) so that the gage bars F are unlocked for movement to inoperative position clear of the aligning lugs F on the magazine base frames. When the magazines have been shifted, the bell-crank P is rocked counterclockwise as the gage bars F are returned to operative position, by, the springs F'. The lever N is rocked inunison with the bell- Asstatedat the outset, it frequentlyihappens that the magazines. are not seated properly in operative position after they have been shifted,

or theybecome' unseated during an attempt-to unlock the gage bars for shifting, and fail to register accurately with the channel entrances D and-D In the case ofan actual shifting-of the magazines, the failure of the magazines to seat properly isusually the result of careless or thoughtless neglect to deliberately effect the seating-after the gage bars are returned Ito-operative position: In the latter instance, however, the unseating is usually the result of accident or in-- advertence. It may arise from the mere attempt to move the gage bars, the movement dislodging the aligning lugs F from the surfaces f of the gage bars F, or from accidentally turning the crank H at the time the handle J is moved. Then-too, it may occur inadvertently as a result offamiliarity'with the earlier magazine shifting arrangements (previously referred to briefly) wherein-it was necessary to lift the magazines clear of their banking bl'ocksiin order to unlock them for shifting. 1 Referring to Figs. 3, 6 and '7, the safety devic to interrupt the presentation of the matrices X to the distributors C andC when the magazines are unseated comprises a trigger-released locking detent 'T adapted to hold the matrix lifting finger c against' operation. The lifting finger c as'is well-known, is carried at the end of an arm pivoted-at c in the distributor box C and adapt ed tobe reciprocated vertically by the, rocking of ja; vertical arm in response to the rotation of a, cam 0 on the distributor C all in the usual manner. .7 l

The locking detent T is pivoted at its lower end to themachine frame, as at t, and has a shoulder. t formed at its upper end adapted to engage beneath the arm 0 carrying'the matrix liftingfinger 0. when the arm is in itsupper position." The movementv of the .detent T is under the control of a trigger mechanism including a cam plate U-and a spring U controlled bythe movement of the shift frame A to which the plate U is connected by means of a lever armoz and'a link U The cam plate U and lever Uzare formed on a housing U loosely mounted onthe shaft 0; the lever extending rearwardly and be-' ing pivotally connect-ed as at u to one end. of the link U who'se opposite end is pivoted as at u to the shift frame A The cam plate U is formed on its'fperiphery w'ithfa' seriesof three radially extending camming elements U (the number will vary according. to the number of magazines or operative positions of theshift frame) which have abrupt sides and sharply rounded ends. These camming elements U are spaced. apart circuniferentially of the plate U to accord with the extent of movement of the shift frame from. one position to another and are adapted to contact a. roller Z carried by a verticalportion 2 of a plate Z loosely mounted on the shaft 0 for relati ve vertical movement. Ahorizontal extension c of. the plate z 'overlies the housi-ng U and the spring T U is connected to the end ofathe extension and a reduced portion out the end of the shaft 0. A vertically extending rod V is arranged with its lower end secured to the extension and is 'slidably supported by a bracket V secured to the machine frame. A camming arm-,V carried at the upper end of the rod V is removably fastened thereon between a collar 12 and a nut 11% The camming arm V presents an inclined surface 12 located below and in engagement with a pin. t projecting laterally from the detent T; and a tension spring V is attached to the end of'the camming arm V and a second pin ti on thedetent Tto provide a yielding connection between the detent and its actuating mecha- IIISIII.

when the shift frame A is in position so that the selected magazines are properly seated, the parts are 'in the positions shown in Figs.'6 and 7. Thus; the roller Z. rests on the tip of one of the camming elements U so that the plate Z is held inits: uppermost position (note the clearance at Z Fig. 7) against thetension of the spring U In this position of the plate Z the rod V is in its raised position so that the engagement of the inclined surface v of the camming plate V with the pin t holds the detent- T clear of the matrix lifting finger arm c When the shift frame A is moved, perhaps only slightly but enough to move the magazines out-of registry with their channel entrances D and D, the movement of the link therewith is multiplied by the lever U? andthe car-n plate U rotated sufficiently to havethe roller Z ride off the tip of the camming element U withwhich it then engages, and the spring U exercises-itself to move the plate Z downward carrying the rod- V and camming arm V with it. This movement of the parts, through the' medimn of the spring V rocks the detent T clock-wise (Fig, 6) into engagement with the 7 matrix lifting finger arm 0 If the arm 0 happens to be in its upper position at the time, the shoulder t of the detent T will simply move beneath it and hold it against further operation; otherwise the detent T will strike the arm 0 and the spring V3-will yield under the pull of the stronger spring U until the arm 0 is raised and the tension of the spring V can act to draw the 'detent into position with its shoulder 12? beneath the When the arm 0 is thus locked against movement, it is held vin the position shown in Fig. 7 whereit is unaife'c-ted by the continued rotation of the cam ,jc' Upon the movement of the shift frame to reseat th'esame magazines or to seat different magazines inoperative position, the roller Z. rides up on the same or a difierent camming element U as the case may be, against the pull of'the spring U and positively restores the 'detent T to its inactive position by raising the plate Z the'rodV and the camming arm V theretraction of the detent T being effected by therei'altive movement of the inclined surface 11 of camming arm V and the pin t on the detentl I V It' wil'l 'be clear fromthe foregoing that the locking detent T' is rendered active at all times when the magazines are not properly seated. While the cam-and-spring trigger arrangement for actuating the lock is sensitive to very slight movements of the shift frame in the seating and unseating of the magazines and is intended primarily to interrupt distribution of the matrices when. the magazines are un-seated accidentally, nevertheless; when the magazines are shifted from one v positiontoanoth-er the roller Z rides oifi one; camming element U and the locking device remains operative until such time as the new are properly seated in operative position-and theroller Z; rides up on another of the elements U As already stated, the present improvements have been shown in connection with a machine wherein pairs of magazines are brought into operative position. Obviously, however, they can be applied equally well to machines of the multiple magazine non-mixing type, wherein a single magazine only occupies an operative position at any one time. Moreover, while a matrix feeler arranged between the magazine entrance channels and the upper ends of the magazines has been shown, the unlocking of the gage bars in conjunction with the interrupting of distribu-' tion may be controlled by matrix feelers commonly employed elsewhere in the machine. The channel feeler, however, is preferablebecause an improved form of positive lock for the gage bars which cannot be forced is made available; and the yielding connection between the feeler and its actuating device not only limits the pressure of the feeler on matrices in its path but the lock is operative to prevent the application ofiundue pressure on the yielding connection.

Having thus described our invention, what we shift frame for incapacitating said matrix feed-- ing means.

3. In a typographical distributing machine, the combination of means for presenting'the matrices to the distributing mechanism, a magazine shift frame adapted to be seated inoperative position, and automatic means for incapacitating .said matrix feeding means when the shift frame is unseated and rendering it active again when said frame is reseated.

4. In a typographical distributing machine, the

combination of means for feeding the matrices to the distributing mechanism, a lock device en'-' gageable with said matrix feeding means to hold it against operation, a magazine shift frame adapted to be seated in one or another of a plurality of operative positions in the selection of different magazines, and means actuable by the movement of the shift frame out of and'into a seated position for rendering said lock device active and inactive, respectively.

5. In a typographical distributing machine, the combination of a reciprocating lifting finger for feeding the matrices individually to the distributing mechanism, a magazine shift frame adapted to be seated in one or another of apluralityof operative positions in the selection of different magazines, and a locking detent controlled by. the unseating movement of the shift frame and engageable with the lifting finger to prevent its reciprocation.

6. In a typographical distributing machine, the combination of a reciprocating lifting finger for feeding the matrices individually to the distributing mechanism, a magazine shift frame adapted to be seated in one or another of a plurality of operative positions in the selection of different magazines, a locking detent engageable with said lifting finger to prevent its reciprocation when the shift frame is unseated, and trigger means adapted to be released in response to the unseating movement of the frame to effect the actuation of the locking detent,

7. In a typographical distributing machine, the combination of 'a reciprocating lifting finger for feeding the matrices individually to the distributing mechanism, a magazine shift frame adapted to be seated in one or another of a plurality of operative positions in the selection of different magazines, a locking detent engageable with said lifting finger to prevent itsreciprocation when the shift frame is unseated, and a cam-andspring trigger arrangement for actuating the locking detent in response to the unseating movement of. the shift frame, the cam beingadapted to hold the locking detent in inactive position when the shift frame is seated and being rotatable by the movement of the frame from its seat to allow the spring to draw the locking detent into engagement with the lifting finger,

8. In a typographical distributing machine, the combination of a vertically reciprocating lifting finger for feeding the matrices individually to the distributing mechanism, a magazine shift frame adapted to be seated in one or another of a plurality of operative positions in the selection of different magazines, a locking detent engageable with the lifting finger when the latter is in its raised position to prevent its reciprocation, a pin projecting, laterally from the lockingdetent and overlying an inclined surface at the upper 'end of a vertically movable shaft, a spring connecting the locking detent to the upper end of the shaft and maintaining the engagement of said pin and inclined surface, a roller near the lower end.

of said shaft arranged to project laterally therefrom,-a cam plate underlying said roller, 9, spring: acting to cause said roller to track on the periph-' ery of the cam plate, a lever arm for rotating said camplate, and a link connecting the lever arm to the shift frame, whereby movement of .the shift frame to unseat it effects a rotation of the cam plate to cause the roller to ride onto a-low portion thereof and allow the vertically movable shaft to descend and permit the locking detent to be rocked yiel-dingly by the spring connected thereto and to the upper end of said shaft for engagement with the matrix lifting finger, ,and

whereby the locking detent is positively cammed' out of engagement with the matrix lifting finger by the relative movement of the pin on the finger and the inclined surface at the upper end of the vertically movable shaft when the shift frame is again seated and its final seating movement causes the roller at the lower end of said shaft to ride up onto a high portion of the cam plate andelevatethe shaft.

9. An attachment for typographical distributing machines comprising, in combination, a:

locking detent adapted to be secured to the machine frame in operative relation to the distributing mechanism for engagement with the matrix lifting finger thereof, means adapted to be mounted in the machine for actuating the locking detent, means adapted to form a connection between the locking detent and its actuating means to effect the rocking of the latter into and out of engagement with the matrix lifting finger, and connections adapted to be arranged between said actuating means and the magazine shift frame to render the actuating means responsive to movements of the shift frame.

10. An attachment for typographical distributing machines comprising, in combination, a locking detent adapted to be secured to the machine frame in operative relation to the distributi-n'g mechanism for engagement with the ma-- trix lifting finger thereof, a cam adapted to be rotatably mounted in the machine for actuating the locking detent, connections adapted to bearranged to cooperate with the cam andrlocking detent to rock the latter into and out' of engagement with the matrix lifting finger, and connec tions adapted to be arranged between the cam andathe. magazine shift frame to effect the rotation of the cam in response to the movements of the shift frame. -11. An attachment according to claim 10, including means for establishing a yielding connec-v tion between the locking detent and cam.

12; In a typographical distributing machine, the combination of a magazine shift frame adapted to be seated in operative position, a locking device for said frame, the frame being capable of a slight movement sufficient to unseat it although the: locking device remains in operative position to prevent further shifting thereof, means to de-" tect the presence of matrices in the course: of distribution to their respective magazine channels and prevent the movement of said locking device to inoperative position, and automatic means to interrupt the distribution ofmatrices whenever theshift frame is unseate'd'.

'13. In a typographical distributing machine, the combination of a magazine shift frame adaptedto be seated in operative position, a locking dcvice for said. shift frame, the frame being capable of a slight movement suffi'cient to unseat it although the locking device remains in operative position to prevent further shifting thereof, means forfeeding the matrices to the distributing mech ani'sm', means todetect the presence of matrices in the course of distribution and prevent the movement of said locking device to inoperative position, andmeans acting in response to the un-j seating movement of the shift frame to render said matrix feeding means inoperative and thereby interrupt the distribution of the matrices. 1

14. A combination according to claim '13, wherein the means to detect matrices in the] course of distribution comprises a feeler'movablej across "the upper end of the magazine in use.

- 15. A combination according to claim 13, wherein the matrix feeding means includes, a matrix lifting finger, and wherein the means to render the matrix feeding means inoperative comprises a locking detent movable into engagenient with said matrix lifting finger.

16. In a typographical distributing machine equipped with a magazine shift frame and a channel entrance for conducting matrices in course of distribution into the magazine in use, the combination of a movable locking device for; said shift frame, and a yieldable detector blade, movablebetween the upper end of the magazine and the channel entrance to detect the presence of matrices lodged therebetween, said detector blade when resisted in its movement byany such lodged matrices being yieldabl'e with respect to said locking device'and operative by such yielding to-preventthemovement of said locln'ng device to-injoperative position. I

17.-In a typographical distributing machine equipped. with a magazine shift frame and a channel entrance for conducting matrices in active by the relative yielding of the locking detween, a bell -crankmounted to rock on. a horizontal shaft, a link connecting one arm of said,

gamers.

course of distribution into the magazine in use, the combination of a movable locking device" for said shift frame. a matrix detector blade operable by saidfdevice and movable between the upperend of the-magazine and the channel entrance to detect the presence of matrices lodged therebetween, and a yieldable connection between. said detector blade and locking device to limit the pressure exerted by the blade on any suchlodged matrices contacted. thereby.

18. In a typographical distributing machine equipped witha' magazine shift frame and a channel entrance for conducting matrices in courseof distribution into the magazine in use,

the combination of a movable locking device for said shift frame, a matrix detector blade operable bysai'd: device'and movable between the upper end of the magazine and the channel entrance to detect the presence of matrices lodged therebetween, a yieldableconnection between said de-' tector blade and locking device to limit the pressure exerted: by the blade on any such lodged matrices contacted: thereby, and means rendered vice and detector blade to prevent the unlocking of the magazine shift frame.

'19. In' atypographical distributing machine equipped with a magazine shift frame and a channel entrance for conducting matrices 'in' course of distribution intothe magazine in use,

the combination of a-movable locking device for said shift frame,.a feeler' blade movable between the upper end'of themagazine and the channel entrance to detect the presence of matrices lodged therebetween, al'ever' actuable by the movement of said locking deviceto operate the feeler blade, a latch to prevent the movement of the locking device: toinoperative position when the movement of-thefeeler1bIade is resisted, and connections between the latch and said lever for operation of the former by the: latter.

' 20. In :a typographical distributing machine equipped with a magazine shift frame and a channel entrance for conducting matrices in course of distribution into the magazine in use, the combination ofa movable locking device for. said shift frameimeans for moving the locking device,"afeeler-blade movable between the upper end of. themagazine and the channel entrance to detect the presence of matrices lodged therebe bell-crank to the locking device, a lever mounted onsaid shaft in side by side relation to the bellcrank,'a spring connecting the bell-crank to said lever, a link connecting one arm of said lever to the feeler'blade, a-latfch pivoted at one end to the machine frame, a link connecting the opposite endioff' the latch to the other arm of said lever, and an open recess in which the latch is adapted to: engage loosely, the recess being formed in the link connecting the bell-crank to the locking device, and the loose engagement of the latch in said recess permitting the parts to partake of HERMAN T. SUN'DSTROM. CLARENCE A. STOPPLE. 

